scholarly journals Pure quantum dephasing of a solid-state electron spin qubit in a large nuclear spin bath coupled by long-range hyperfine-mediated interactions

2009 ◽  
Vol 79 (24) ◽  
Author(s):  
Łukasz Cywiński ◽  
Wayne M. Witzel ◽  
S. Das Sarma
Keyword(s):  
Solid State ◽  
Long Range ◽  
Electron Spin ◽  
Nuclear Spin ◽  
Solid State Electron ◽  
Spin Bath ◽  
State Electron ◽  
Spin Qubit

scholarly journals Optimization of a solid-state electron spin qubit using gate set tomography

2016 ◽  
Vol 18 (10) ◽  
pp. 103018 ◽  
Author(s):  
Juan P Dehollain ◽  
Juha T Muhonen ◽  
Robin Blume-Kohout ◽  
Kenneth M Rudinger ◽  
John King Gamble ◽  
...  
Keyword(s):  
Solid State ◽  
Electron Spin ◽  
Solid State Electron ◽  
State Electron ◽  
Spin Qubit

scholarly journals Modeling, Design, and Optimization of a Solid State Electron Spin Qubit

2005 ◽  
Vol 65 (4) ◽  
pp. 1285-1304 ◽  
Author(s):  
R. E. Caflisch ◽  
Mark F. Gyure ◽  
Hans D. Robinson ◽  
Eli Yablonovitch
Keyword(s):  
Solid State ◽  
Electron Spin ◽  
Solid State Electron ◽  
Design And Optimization ◽  
State Electron ◽  
Spin Qubit

Long-range solid-state electron transport through ferritin multilayers

2019 ◽  
Vol 7 (29) ◽  
pp. 9038-9048 ◽  
Author(s):  
Sudipta Bera ◽  
Jayeeta Kolay ◽  
Pallabi Pramanik ◽  
Anirban Bhattacharyya ◽  
Rupa Mukhopadhyay
Keyword(s):  
Solid State ◽  
Electron Transport ◽  
Long Range ◽  
Storage Protein ◽  
Solid State Electron ◽  
Iron Storage ◽  
State Electron ◽  
Iron Storage Protein

We have developed a purely protein-based multilayered semiconducting 3D material using iron-storage protein ferritin. It is electronically homogeneous; capable of long range electron transport having a long exciton radius, and showsz-confinement.

scholarly journals Solid-state electron spin lifetime limited by phononic vacuum modes

2018 ◽  
Vol 17 (4) ◽  
pp. 313-317 ◽  
Author(s):  
T. Astner ◽  
J. Gugler ◽  
A. Angerer ◽  
S. Wald ◽  
S. Putz ◽  
...  
Keyword(s):  
Solid State ◽  
Electron Spin ◽  
Solid State Electron ◽  
State Electron ◽  
Spin Lifetime

scholarly journals Controllable freezing of the nuclear spin bath in a single-atom spin qubit

2020 ◽  
Vol 6 (27) ◽  
pp. eaba3442 ◽  
Author(s):  
Mateusz T. Mądzik ◽  
Thaddeus D. Ladd ◽  
Fay E. Hudson ◽  
Kohei M. Itoh ◽  
Alexander M. Jakob ◽  
...  
Keyword(s):  
Electron Spin ◽  
Nuclear Spin ◽  
Quantum Coherence ◽  
Spin Dynamics ◽  
Spin Fluctuations ◽  
Single Atom ◽  
Spin Qubits ◽  
Nuclear Dynamics ◽  
Spin Bath ◽  
Spin Qubit

The quantum coherence and gate fidelity of electron spin qubits in semiconductors are often limited by nuclear spin fluctuations. Enrichment of spin-zero isotopes in silicon markedly improves the dephasing time T2*, which, unexpectedly, can extend two orders of magnitude beyond theoretical expectations. Using a single-atom 31P qubit in enriched 28Si, we show that the abnormally long T2* is due to the freezing of the dynamics of the residual 29Si nuclei, caused by the electron-nuclear hyperfine interaction. Inserting a waiting period when the electron is controllably removed unfreezes the nuclear dynamics and restores the ergodic T2* value. Our conclusions are supported by a nearly parameter-free modeling of the 29Si nuclear spin dynamics, which reveals the degree of backaction provided by the electron spin. This study clarifies the limits of ergodic assumptions in nuclear bath dynamics and provides previously unidentified strategies for maximizing coherence and gate fidelity of spin qubits in semiconductors.

scholarly journals Semiclassical model for the dephasing of a two-electron spin qubit coupled to a coherently evolving nuclear spin bath

2011 ◽  
Vol 84 (3) ◽  
Author(s):  
Izhar Neder ◽  
Mark S. Rudner ◽  
Hendrik Bluhm ◽  
Sandra Foletti ◽  
Bertrand I. Halperin ◽  
...  
Keyword(s):  
Electron Spin ◽  
Nuclear Spin ◽  
Semiclassical Model ◽  
Spin Bath ◽  
Spin Qubit

Carbon dots as solid-state electron mediator for BiVO4/CDs/CdS Z-scheme photocatalyst working under visible light

2017 ◽  
Vol 206 ◽  
pp. 501-509 ◽  
Author(s):  
Xiuqin Wu ◽  
Juan Zhao ◽  
Liping Wang ◽  
Mumei Han ◽  
Mengling Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Carbon Dots ◽  
Electron Mediator ◽  
Solid State Electron ◽  
State Electron
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